Organic light-emitting display panel and display device

ABSTRACT

An organic light-emitting display panel and a display device are provided. The organic light-emitting display panel includes: a driving device film layer, an anode layer, a pixel definition layer, an organic light-emitting layer, a cathode layer, an encapsulation film layer, and a touch film layer that are sequentially stacked. The encapsulation film layer includes an organic encapsulation layer. The organic light-emitting display panel has a specially-shaped border area and a straight-line border area. In the cathode connection area, in a direction perpendicular to the organic light-emitting display panel, a top end of the cathode layer is higher in the specially-shaped border area than in the straight-line border area, and the top end of the cathode layer is an end of the cathode layer furthest away from the driving device film layer.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure is a continuation of U.S. application Ser. No.16/455,598, filed on Jun. 27, 2019, which claims priority to ChinesePatent Application No. 201910248326.9, filed on Mar. 29, 2019, thecontent of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of displaytechnologies, and in particular, to an organic light-emitting displaypanel and a display device.

BACKGROUND

With the development of the display technology, an organiclight-emitting display (OLED) panel has become more widely used due toits excellent performances such as self-luminosity, high brightness,wide visual angle, and fast response.

In the organic light-emitting display panel, in order to make more useof space or provide a more aesthetic effect, an organic light-emittingdisplay panel having a specially-shaped edge (such as a rounded edge oran edge having a hollow structure) is used. However, a touch electrodelocated at a specially-shaped edge is prone to wire breakage, therebyresulting in a poor touch effect.

SUMMARY

The present disclosure provides an organic light-emitting display paneland a display device, aiming to alleviate the poor touch effect causedby wire breakage of the touch electrode at the specially-shaped edge.

In an aspect, an embodiment of the present disclosure provides anorganic light-emitting display panel. The organic light-emitting displaypanel includes: a driving device film layer, an anode layer, a pixeldefinition layer, an organic light-emitting layer, a cathode layer, anencapsulation film layer, and a touch film layer that are sequentiallystacked. The encapsulation film layer includes an organic encapsulationlayer. The organic light-emitting display panel has a display area and aborder area surrounding the display area, the border area includes aspecially-shaped border area and a straight-line border area, and eachof the specially-shaped border area and the straight-line border areaincludes a cathode connection area. The anode layer includes a cathodesignal connection wire located in the cathode connection area. The pixeldefinition layer includes a cathode signal connection portion located inthe cathode connection area. The cathode signal connection portionincludes a hollow connection area in the cathode connection area. Thecathode layer is electrically connected to the cathode signal connectionwire through the hollow connection area in the pixel definition layer.In the cathode connection area, in a direction perpendicular to theorganic light-emitting display panel, a top end of the cathode layer ishigher in the specially-shaped border area than in the straight-lineborder area, and the top end of the cathode layer is an end of thecathode layer furthest away from the driving device film layer.

In another aspect, an embodiment of the present disclosure provides adisplay device, including the organic light-emitting display paneldescribed above.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate technical solutions in embodimentsof the present disclosure or in the related art, the accompanyingdrawings used in the embodiments and in the related art are brieflyintroduced as follows. It should be noted that the drawings described asfollows are merely part of the embodiments of the present disclosure,other drawings can also be acquired by those skilled in the art.

FIG. 1 is a schematic structural diagram of an organic light-emittingdisplay panel in the related art;

FIG. 2 is a structural cross-sectional view of an area A′ of FIG. 1;

FIG. 3 is a structural cross-sectional view of an area B′ of FIG. 1;

FIG. 4 is a schematic structural diagram of an organic light-emittingdisplay panel according to an embodiment of the present disclosure;

FIG. 5 is an enlarged structural diagram of an area A of FIG. 4;

FIG. 6 is a structural cross-sectional view along a direction AA′ ofFIG. 5;

FIG. 7 is an enlarged structural diagram of an area B of FIG. 4;

FIG. 8 is a structural cross-sectional view along a direction BB′ ofFIG. 7;

FIG. 9 is another enlarged structural diagram of an area A of FIG. 4;

FIG. 10 is a structural cross-sectional view along a direction CC′ ofFIG. 9;

FIG. 11 is another enlarged structural diagram of an area B of FIG. 4;

FIG. 12 is a structural cross-sectional view along a direction DD′ ofFIG. 11;

FIG. 13 is still another enlarged structural diagram of an area A ofFIG. 4;

FIG. 14 is a structural cross-sectional view along a direction EE′ ofFIG. 13;

FIG. 15 is a schematic structural diagram of an organic light-emittingdisplay panel according to another embodiment of the present disclosure;and

FIG. 16 is a schematic structural diagram of a display device accordingto an embodiment of the present disclosure.

DESCRIPTION OF EMBODIMENTS

In order to make the purpose, technical solutions, and advantages of theembodiments of the present disclosure better understood, the technicalsolutions in the embodiments of the present disclosure are described inthe following with reference to the accompanying drawings. It should beunderstood that the described embodiments are merely exemplaryembodiments of the present disclosure, which shall not be interpreted asproviding limitations to the present disclosure. All other embodimentsobtained by those skilled in the art according to the embodiments of thepresent disclosure are within the scope of the present disclosure.

The terms used in the embodiments of the present disclosure are merelyfor the purpose of describing particular embodiments but not intended tolimit the present disclosure. Unless otherwise noted in the context, thesingular form expressions “a”, “an”, “the” and “said” used in theembodiments and appended claims of the present disclosure are alsointended to represent plural form expressions thereof.

In order to further illustrate beneficial effects of the embodiments ofthe present disclosure, problems existing in the related art areexplained prior to describing the embodiments of the present disclosure.

FIG. 1 is a schematic structural diagram of an organic light-emittingdisplay panel in the related art, FIG. 2 is a structural cross-sectionalview of an area A′ of FIG. 1, and FIG. 3 is a structural cross-sectionalview of an area B′ of FIG. 1. As shown in FIGS. 1-3, in the related art,an organic light-emitting display panel includes a specially-shapededge. In an example, a hole is arranged at an edge of the display panel,and the edge of the display panel located at the hole is aspecially-shaped edge. Here, an area A′ is a specially-shaped edge area,and an area B′ is a straight-line edge area. The organic light-emittingdisplay panel includes an encapsulation film layer 1′ and a touch filmlayer 2′ that are sequentially stacked. The touch film layer 2′ includessignal metal wires for implementing a touch function. An organicmaterial layer is provided in the encapsulation film layer 1′. Theorganic material layer is formed by inkjet printing. However, during aprocess of forming the organic material layer, due to the fluidity ofthe organic material layer and the inkjet printing process, the organicmaterial layer is significantly thinner in the specially-shaped edgearea of the organic material layer (i.e., the area A′) in a directionclose to the edge. That is, in the specially-shaped edge area, athickness of the encapsulation film layer 1′ in a directionperpendicular to the organic light-emitting display panel decreases in adirection close to the edge of the organic light-emitting display panel.The touch film layer 2′ is formed on the encapsulation film layer 1′. Asignal metal wire is formed in the touch film layer 2′ in the followingmanner. First a metal layer is formed, and a photoresist is formed onthe metal layer; then the photoresist is photoetched into a pattern;then an etching liquid is sprayed on the photoresist having thispattern, and the etching liquid etches away the metal exposed outsidethe photoresist to make the metal layer form this pattern; finally thephotoresist is removed to form a final signal metal wire. In thespecially-shaped edge area, since the thickness of the encapsulationfilm layer 1′ is small, more etching liquid is accumulated in thespecially-shaped edge area during etching of the signal metal wire, andthus more metal is etched away. In the non-specially-shaped edge area,such as the area B′, i.e., the straight-line edge area, the thickness ofthe encapsulation film layer 1′ changes slightly, and thus the signalmetal wire in the touch film layer 2′ has a larger width. That is, thewidth a1′ of the signal metal wire in the specially-shaped edge area issmaller than the width a2′ of the signal metal wire in thenon-specially-shaped edge area. Therefore, in the specially-shaped edgearea, the width a1′ of the signal metal wire in the touch film layer 2′is smaller, and thus the wire may be easily broken, resulting in a poortouch performance.

FIG. 4 is a schematic structural diagram of an organic light-emittingdisplay panel according to an embodiment of the present disclosure, FIG.5 is an enlarged structural diagram of an area A of FIG. 4, FIG. 6 is astructural cross-sectional view along a direction AA′ of FIG. 5, FIG. 7is an enlarged structural diagram of an area B of FIG. 4, and FIG. 8 isa structural cross-sectional view along a direction BB′ of FIG. 7. Asshown in FIGS. 4-8, an embodiment of the present disclosure provides anorganic light-emitting display panel. The organic light-emitting displaypanel includes a driving device film layer 1, an anode layer 21, a pixeldefinition layer 22, an organic light-emitting layer 23, a cathode layer24, an encapsulation film layer 3, and a touch film layer 4 that aresequentially stacked. The encapsulation film layer 3 includes an organicencapsulation layer 30. The organic light-emitting display panel has adisplay area 5 and a border area 6 surrounding the display area 5. Theborder area 6 includes a specially-shaped border area 61 and astraight-line border area 62. The specially-shaped border area 61 andthe straight-line border area 62 each include a cathode connection area7. The anode layer 21 includes a cathode signal connection wire 210located in the cathode connection area 7. The pixel definition layer 22includes a cathode signal connection portion 220 located in the cathodeconnection area. The cathode signal connection portion 220 has a hollowconnection area. In the cathode connection area 7, the cathode layer 24is electrically connected to the cathode signal connection wire 210through the hollow connection area in the pixel definition layer 22. Inthe cathode connection area 7, in a direction perpendicular to theorganic light-emitting display panel, a top end H1 of the cathode layer24 is higher in the specially-shaped border area 61 than in thestraight-line border area 62. Here, the top end of the cathode layer 24is an end of the cathode layer 24 furthest away from the driving devicefilm layer 1.

In the display area 5, the pixel definition layer 22 has an aperturecorresponding to each sub-pixel, the anode layer 21 includes an anode211 corresponding to each sub-pixel. The aperture of the pixeldefinition layer 22 exposes the anode 211, and the organiclight-emitting layer 23 is disposed in the aperture of the pixeldefinition layer 22. The cathode layer 24 covers the aperturecorresponding to each sub-pixel. That is, at the aperture correspondingto each sub-pixel, the anode 211, the organic light-emitting layer 23and the cathode layer 24 that are stacked form a light-emitting device.For this light-emitting device, a voltage is respectively applied on thecathode layer 24 and the anode 211, so that electrons and holes areinjected into the organic light-emitting layer 23 and recombined in theorganic light-emitting layer 23, thereby releasing energy to emit lightand thus achieving light-emission of the sub-pixel. The driving devicefilm layer 1 includes a pixel driving circuit corresponding to eachsub-pixel, and the pixel driving circuit is configured to drive thelight-emitting device to emit light. The driving device film layer 1 mayfurther include a peripheral circuit such as a scan driving circuit. Thetouch film layer 4 is configured to implement the touch function of theorganic light-emitting display panel. The touch film layer 4 includessignal metal wires for transmitting signals. The embodiments of thepresent disclosure are not limited to any structure of the touch filmlayer 4. For example, the touch film layer 4 may have a single layerstructure or a multi-layer structure, in which a touch electrode and atouch signal wire for transmitting a signal are provided. Here, thetouch electrode may have a metal mesh structure, and the metal mesh maybe formed by signal metal wires. The encapsulation film layer 3 isconfigured to encapsulate the light-emitting device in the display areaso as to prevent external water and oxygen from eroding thelight-emitting device. The encapsulation film layer 3 includes anorganic encapsulation layer 30. The organic encapsulation layer 30 isformed by inkjet printing. However, during a process of forming theorganic material layer 30, due to the fluidity of the organic materiallayer 30 and the inkjet printing process, the thickness of the organicmaterial layer 30 gradually decreases in the specially-shaped borderarea. The touch film layer 4 is formed on the encapsulation portion 3.In the specially-shaped border area 61, a signal metal wire is formed inthe touch film layer 4 in the following manner. First a metal layer isformed, and a photoresist is formed on the metal layer; then thephotoresist is photoetched into a pattern; then an etching liquid issprayed on the photoresist having this pattern, and the etching liquidetches away the metal exposed outside the photoresist to make the metallayer form this pattern; finally the photoresist is removed to form afinal signal metal wire. Since a top end H1 of the cathode layer 24 inthe specially-shaped border area 61 is higher than a top end H2 of thecathode layer 24 in the straight-line border area 62, the organicencapsulation layer 30 has a larger thickness in the specially-shapedborder area 61 due to a larger height of the top end of the cathodelayer 24 during etching of the metal wire. That is, the thickness of theorganic encapsulation layer 30 in the specially-shaped border area 61gets close to the thickness of the organic encapsulation layer 30 in thestraight-line border area 62, so that the etching liquid which wouldotherwise be accumulated around the signal metal wire in thespecially-shaped border area 61 is reduced. Thus, the portion of thesignal metal wire that is etched is also reduced. That is, compared withthe related art, a width of the signal metal wire in the touch filmlayer 4 is increased, and a probability that the signal metal wire inthe specially-shaped border area 61 is excessively etched to cause wirebreakage is reduced. Therefore, a problem of poor touch effect caused bywire breakage of the touch electrode in the specially-shaped edge areais mitigated.

Optionally, in an embodiment, as shown in FIGS. 4-8, in thespecially-shaped border area 61, a first blocking wall 71 is arrangedbetween the pixel definition layer 22 and the cathode layer 24. Thefirst blocking wall 71 extends in an extending direction of thespecially-shaped border area 61. In both the specially-shaped borderarea 61 and the straight-line border area 62, a second blocking wall 72is arranged at a side of the pixel definition layer 22 that is away fromthe driving device film layer 1. The second blocking wall 72 extends inan extending direction of the specially-shaped border area 61 and thestraight-line border area 62. In the specially-shaped border area 61,the second blocking wall 72 is located at a side of the first blockingwall 71 that is away from the display area 5. In the specially-shapedborder area 61, the organic encapsulation layer 30 extends from thedisplay area 5 to the first blocking wall 71 and is blocked by the firstblocking wall 71 from flowing to the side of the first blocking wall 71that is away from the display area 5. That is, when the manufacture ofthe encapsulation film layer 3 is completed, in the specially-shapedborder area 61, the organic encapsulation layer 30 is arranged only at aside of the first blocking wall 71 that is close to the display area 5;and in the straight-line border area 62, the organic encapsulation layer30 extends from the display area 5 to the second blocking wall 72. Sincethe first blocking wall 71 is not arranged in the straight-line borderarea 62, the cathode layer 24 has a smaller height in the cathodeconnection area 7 and does not block the organic encapsulation layer 30,whereas the organic encapsulation layer 30 is blocked by the secondblocking wall 72.

In particular, in the specially-shaped border area 61, since the firstblocking wall 71 is arranged between the cathode layer 24 and the pixeldefinition layer 22 in the cathode connection area 7, the top end H1 ofthe cathode layer 24 in the specially-shaped border area 61 has a largerheight. Due to the first blocking wall 71, the organic encapsulationlayer 30 is blocked and limited within an area close to the display area5. In the straight-line border area 62, since the first blocking wall isnot arranged between the cathode layer 24 and the pixel definition layer22 in the cathode connection area 7, the top end H2 of the cathode layer24 in the straight-line border area 62 has a smaller height, and thuswill not limit the organic encapsulation layer 30 here. Due to thesecond blocking wall 72, the organic encapsulation layer 30 is blockedand limited within an area away from the display area 5. Therefore, inthe specially-shaped border area 61, compared with the related art, moreof the organic encapsulation layer 30 is aggregated in a smaller area.That is, the organic encapsulation layer 30 has a larger height in thespecially-shaped border area 61. That is, the thickness of the organicencapsulation layer 30 in the specially-shaped border area 61 gets closeto the thickness of the organic encapsulation layer 30 in thestraight-line border area 62, so that the etching liquid which wouldotherwise be accumulated around the signal metal wire in thespecially-shaped border area 61 is reduced during the process ofmanufacturing the signal metal wire in the touch film layer 4. Thus, theportion of the signal metal wire that is etched is reduced. That is,compared with the related art, the width of the signal metal wire in thetouch film layer 4 is increased, and a probability that the signal metalwire in the specially-shaped border area 61 is excessively etched tocause wire breakage is reduced. Therefore, a problem of poor toucheffect caused by wire breakage of the touch electrode in thespecially-shaped edge area is mitigated. It should be noted that in theborder area 6, a third blocking wall 73 may be further arranged at aside of the second blocking wall 72 that is away from the display area5. In this way, on one hand, the organic encapsulation layer 30 can befurther blocked, and on the other hand, the encapsulation film layer 3may also include an inorganic film layer (not shown), and the thirdblocking wall 73 can prevent crack propagation of the inorganic filmlayer when cutting the panel.

In an embodiment, as shown in FIGS. 4-8, the cathode signal connectionportion 220 includes a strip-shaped extension portion 221 and an islandpattern portion 222, and the island pattern portion 222 is locatedbetween the strip-shaped extension portion 221 and the display area 5.The strip-shaped extending portion 221 extends in the extendingdirection of the border area 6. The first blocking wall 71 is locatedbetween the strip-shaped extending portion 221 and the cathode layer 24.

In an embodiment, a plurality of island pattern portions 222 aredistributed in the border area 6, so that the cathode layer 24 is betterconnected to the cathode signal connection wire 210 in the cathodeconnection area 7, and overlapping of the strip-shaped extension portion221 with the first blocking wall 71 makes their combination better blockthe organic encapsulation layer 30.

In an embodiment, in the display area 5, a support portion (not shown)is disposed between the pixel definition layer 22 and the cathode layer24. The first blocking wall 71, the second blocking wall 72 and thesupport portion are also disposed in the same layer. The support portionis configured to support a mask in the process of manufacturing thecathode layer 24. The first blocking wall 71, the second blocking wall72 and the support portion are disposed in the same layer, that is, theycan be formed by one and the same patterning process, thereby reducingthe number of process steps.

FIG. 9 is another enlarged structural diagram of an area A of FIG. 4,FIG. 10 is a structural cross-sectional view along a direction CC′ ofFIG. 9, FIG. 11 is another enlarged structural diagram of an area B ofFIG. 4, and FIG. 12 is a structural cross-sectional view along adirection DD′ of FIG. 11. In an embodiment, as shown in FIG. 4 and FIGS.9-12, in the cathode connection area 7, a thickness of the drivingdevice film layer 1 is larger in the specially-shaped border area 61than in the straight-line border area 62 in the direction perpendicularto the organic light-emitting display panel.

Since the thickness of the driving device film layer 1 is larger in thespecially-shaped border area 61 than in the straight-line border area62, an overall height of the cathode layer 24 in the cathode connectionarea 7 is larger in the specially-shaped border area 61 than in thestraight-line border area 62. Therefore, the organic encapsulation layer30 has a larger overall height in the specially-shaped border area 61.That is, the thickness of the organic encapsulation layer 30 in thespecially-shaped border area 61 gets close to the thickness of theorganic encapsulation layer 30 in the straight-line border area 62, sothat the etching liquid which would otherwise be accumulated around thesignal metal wire in the specially-shaped border area 61 is reducedduring the process of manufacturing the signal metal wire in the touchfilm layer 4. Thus, the portion of the signal metal wire that is etchedis reduced. That is, compared with the related art, the width of thesignal metal wire in the touch film layer 4 is increased, and aprobability that the signal metal wire in the specially-shaped borderarea 61 is excessively etched to cause wire breakage is reduced.Therefore, a problem of poor touch effect caused by wire breakage of thetouch electrode in the specially-shaped edge area is mitigated.

In an embodiment, as shown in FIG. 4 and FIGS. 9-12, the driving devicefilm layer 1 includes an organic insulation layer 11. The organicinsulation layer 11 overlaps the pixel definition layer 22 in thespecially-shaped border area 61, and the organic insulation layer 11does not overlap the straight-line border area 62.

The driving device film layer 1 includes the organic insulation layer 11having a large thickness. The organic insulation layer 11 is arranged inthe specially-shaped border area 61 and not arranged in thestraight-line border area 62, so that the thickness of the drivingdevice film layer 1 is larger in the specially-shaped border area 61than in the straight-line border area 62.

In an embodiment, as shown in FIGS. 4 and 9-12, in a direction facingaway from the anode layer 21, the driving device film layer 1 includes aplanarization layer 12, a source and drain metal layer 13, an organicinsulation layer 11, a gate metal layer 14, a gate insulation layer 15,and a semiconductor layer 16. The source and drain metal layer 13 isused to form source and drain electrodes of a thin film transistor, andthe gate metal layer 14 is used to form a gate electrode of the thinfilm transistor. The semiconductor layer 16 is used to form an activelayer of the thin film transistor. The thin film transistor is used toform a circuit in the driving device film layer 1 so as to control thelight-emitting device. The organic insulation layer 11 is used toachieve insulation between the source and drain metal layer 13 and thegate metal layer 14 of the thin film transistor in the display area.

It should be noted that, in the structure shown in FIG. 9 and FIG. 10,it is only in the cathode connection area 7 where the thickness of thedriving device film layer 1 is larger in the specially-shaped borderarea 61 than in the straight-line border area 62, such that the top endH1 of the cathode layer 24 in the specially-shaped border area 61 ishigher than the top end H2 of the cathode layer 24 in the straight-lineborder area 62. The structure shown in FIG. 9 and FIG. 10 can becombined with the structure shown in FIG. 5 and FIG. 6. That is, in thespecially-shaped border area 61, the first blocking wall 71 is arrangedbetween the pixel definition layer 22 and the cathode layer 24; and inthe cathode connection area 7, the thickness of the driving device filmlayer 1 is larger in the specially-shaped border area 61 than in thestraight-line border area 62. In this way, on one hand, the overallheight of the organic encapsulation layer 30 in the specially-shapedborder area 61 is increased by increasing the overall height of thecathode layer 24 in the specially-shaped border area 61. On the otherhand, the organic encapsulation layer 30 is blocked and limited withinan area close to the display area 5 by the blocking wall 71, therebyincreasing the overall height of the organic encapsulation layer 30 inthe specially-shaped border area 61. In these two ways, the overallheight of the organic encapsulation layer 30 in the specially-shapedborder area 61 can be increased. Therefore, the etching liquid whichwould otherwise be accumulated around the signal metal wire in thespecially-shaped border area 61 is reduced during the process ofmanufacturing the signal metal wire in the touch film layer 4. Thus, theportion of the signal metal wire that is etched is also reduced. Thatis, compared with the related art, the width of the signal metal wire inthe touch film layer 4 is increased, and a probability that the signalmetal wire in the specially-shaped border area 61 is excessively etchedto cause wire breakage is reduced. Therefore, a problem of poor toucheffect caused by wire breakage of the touch electrode in thespecially-shaped edge area is mitigated.

FIG. 13 is still another enlarged structural diagram of an area A ofFIG. 4, and FIG. 14 is a structural cross-sectional view along adirection EE′ of FIG. 13. In an embodiment, as shown in FIGS. 4, 7, 8,and 11-14, an area occupied by the cathode signal wire connectionportion 220 per unit area is larger in the specially-shaped border area61 than in the straight-line border area 62.

As shown in the figures, the cathode signal wire connection portion 220occupies a large area in the specially-shaped border area 61. Therefore,the area of the organic encapsulation layer 30 in the specially-shapedborder area 61 is reduced, thereby increasing the overall height of theorganic encapsulation layer 30 in the specially-shaped border area 61.Therefore, the etching liquid which would otherwise be accumulatedaround the signal metal wire in the specially-shaped border area 61 isreduced during the process of manufacturing the signal metal wire in thetouch film layer 4. Thus, the portion of the signal metal wire that isetched is reduced. That is, compared with the related art, the width ofthe signal metal wire in the touch film layer 4 is increased, and aprobability that the signal metal wire in the specially-shaped borderarea 61 is excessively etched to cause wire breakage is reduced.Therefore, a problem of poor touch effect caused by wire breakage of thetouch electrode in the specially-shaped edge area is mitigated. Itshould be noted that the structure shown in FIG. 13 and FIG. 14 can becombined with other structures in the embodiments of the presentdisclosure. In an example, the area occupied by the cathode signal wireconnection portion 220 per unit area is larger in the specially-shapedborder area 61 than in the straight-line border area 62, and thethickness of the driving device film layer 1 is larger in thespecially-shaped border area 61 than in the straight-line border area62. In another example, the area occupied by the cathode signal wireconnection portion 220 per unit area is larger in the specially-shapedborder area 61 than in the straight-line border area 62, and in thespecially-shaped border area 61, the first blocking wall 71 is arrangedbetween the pixel definition layer 22 and the cathode layer 24.Alternatively, in still another example, the area occupied by thecathode signal wire connection portion 220 per unit area is larger inthe specially-shaped border area 61 than in the straight-line borderarea 62, and in the specially-shaped border area 61, the thickness ofthe driving device film layer 1 is larger in the specially-shaped borderarea 61 than in the straight-line border area 62, and in thespecially-shaped border area 61, the first blocking wall 71 is arrangedbetween the pixel definition layer 22 and the cathode layer 24.

In an embodiment, the cathode signal connection portion 220 includes anisland pattern portion 222, and the island pattern portion 222 includesa plurality of individual island structures. At least one of the islandstructures in the specially-shaped border area 61 has an area that islarger than an area of any island structure in the straight-line borderarea 62. For example, in some embodiments, each of the island structuresin the straight-line border area 62 has a same rectangle shape, and atleast one of the island structures in the specially-shaped border area61 has a rectangle shape, whereas the other island structures in thespecially-shaped border area 61 each has a cross shape or a linear shapeoccupying a larger area.

In an embodiment, at least one of the island structures in thespecially-shaped border area 61 is reused as an alignment mark.

In an example, the island structure having a cross shape can increaseits space occupation, thereby increasing the thickness of the organicencapsulation layer 30 in the specially-shaped border area 61. Moreover,in some embodiments, a polarizer needs to be attached to the organiclight-emitting display panel after the manufacture of the touch filmlayer 4 has completed. Since the organic light-emitting display paneland the polarizer both have a specially-shaped edge, accurate alignmentis required between them. When at least one of the island structures inthe specially-shaped border area 61 is reused as the alignment mark, thepolarizer can be aligned by using the alignment mark, thereby improvingalignment accuracy between the polarizer and the organic light-emittingdisplay panel.

In an embodiment, as shown in FIG. 4, the organic light-emitting displaypanel has a shape of a rounded rectangle. The rounded rectangle has astraight-line edge and an arc edge. Here, the border area 6 close to thearc edge is the specially-shaped border area 61, and the border area 6close to the straight-line edge is the straight-line border area 62.

FIG. 15 is a schematic structural diagram of an organic light-emittingdisplay panel according to another embodiment of the present disclosure.In an embodiment, as shown in FIG. 15, the organic light-emittingdisplay panel has a straight-line edge and a hole recessed from thestraight-line edge towards the center of the organic light-emittingdisplay panel. Here, the border area 6 close to the hole is thespecially-shaped border area 61, and the border area 6 close to thestraight-line edge is the straight-line border area 62. When the organiclight-emitting display panel is applied to a display device, a devicesuch as a front camera will be arranged at the hole.

FIG. 16 is a schematic structural diagram of a display device accordingto an embodiment of the present disclosure. As shown in FIG. 16, anembodiment of the present disclosure further provides a display device,including the organic light-emitting display panel 100 described above.

The display device in the embodiments of the present disclosure may beany electronic device having a display function, such as a touch displayscreen, a cellphone, a tablet computer, a notebook computer, anelectronic paper book, or a television.

The above-described embodiments are merely preferred embodiments of thepresent disclosure and are not intended to limit the present disclosure.Any modifications, equivalent substitutions and improvements made withinthe principle of the present disclosure shall fall into the protectionscope of the present disclosure.

Finally, it should be noted that, the above-described embodiments aremerely for illustrating the present disclosure but not intended toprovide any limitation. Although the present disclosure has beendescribed in detail with reference to the above-described embodiments,it should be understood by those skilled in the art that, it is stillpossible to modify the technical solutions described in the aboveembodiments or to equivalently replace some or all of the technicalfeatures therein, but these modifications or replacements do not causethe essence of corresponding technical solutions to depart from thescope of the present disclosure.

What is claimed is:
 1. An organic light-emitting display panel,comprising: a driving device film layer, an anode layer, a pixeldefinition layer, an organic light-emitting layer, a cathode layer, andan encapsulation film layer that are sequentially stacked; wherein theencapsulation film layer comprises an organic encapsulation layer;wherein the organic light-emitting display panel has a display area anda border area surrounding the display area, the border area comprises astraight-line border area and a specially-shaped border area, and eachof the specially-shaped border area and the straight-line border areacomprises a cathode connection area; wherein a cathode signal connectionwire and a cathode signal connection portion are provided in the cathodeconnection area; the cathode layer at least partially covers thestraight-line border area and the specially-shaped border area; and thecathode signal connection wire, the cathode signal connection portion,and the cathode layer are sequentially arranged in the specially-shapedborder area and the straight-line border; wherein the cathode signalconnection portion comprises a hollow connection area, and in thecathode connection area, the cathode layer is electrically connected tothe cathode signal connection wire through the hollow connection area inthe pixel definition layer; and wherein an area occupied by the cathodesignal connection portion per unit area is larger in thespecially-shaped border area than in the straight-line border area. 2.The organic light-emitting display panel according to claim 1, whereinthe cathode signal connection portion comprises an island patternportion, and the island pattern portion comprises a plurality ofindividual island structures; and wherein at least one of the pluralityof island structures in the specially-shaped border area has an areathat is larger than an area of any island structure of the plurality ofisland structures in the straight-line border area.
 3. The organiclight-emitting display panel according to claim 2, wherein the organicencapsulation layer at least partially covers the specially-shapedborder area, and the organic encapsulation layer covers the plurality ofisland structures.
 4. The organic light-emitting display panel accordingto claim 3, further comprising a touch film layer, wherein the touchfilm layer is disposed on a surface of the encapsulation film layerfacing away from the driving device film layer.
 5. The organiclight-emitting display panel according to claim 4, wherein in thespecially-shaped border area, the touch film layer at least partiallyoverlaps the plurality of island structures.
 6. The organiclight-emitting display panel according to claim 1, wherein in thecathode connection area, in a direction perpendicular to the organiclight-emitting display panel, a top end of the cathode layer is higherin the specially-shaped border area than in the straight-line borderarea, and the top end of the cathode layer is an end of the cathodelayer furthest away from the driving device film layer.
 7. The organiclight-emitting display panel according to claim 6, wherein in thespecially-shaped border area, a first blocking wall is arranged betweenthe pixel definition layer and the cathode layer, and the first blockingwall extends in an extending direction of the specially-shaped borderarea; wherein in the specially-shaped border area and the straight-lineborder area, a second blocking wall is arranged at a side of the pixeldefinition layer facing away from the driving device film layer, and thesecond blocking wall extends in an extending direction of thespecially-shaped border area and the straight-line border area; and inthe specially-shaped border area, the second blocking wall is located ata side of the first blocking wall facing away from the display area;wherein in the specially-shaped border area, the organic encapsulationfilm layer extends from the display area to the first blocking wall; andwherein in the straight-line border area, the organic encapsulation filmlayer extends from the display area to the second blocking wall.
 8. Theorganic light-emitting display panel according to claim 7, wherein thecathode signal connection portion comprises a strip-shaped extensionportion and an island pattern portion, the island pattern portion islocated between the strip-shaped extension portion and the display area,and the strip-shaped extension portion extends in an extending directionof the border area; and wherein the first blocking wall is locatedbetween the strip-shaped extension portion and the cathode layer.
 9. Theorganic light-emitting display panel according to claim 7, wherein, inthe display area, a support portion is arranged between the pixeldefinition layer and the cathode layer; and wherein the support portion,the first blocking wall and the second blocking wall are arranged in thesame layer.
 10. The organic light-emitting display panel according toclaim 1, wherein in the cathode connection area, a thickness of thedriving device film layer in a direction perpendicular to the organiclight-emitting display panel is larger in the specially-shaped borderarea than in the straight-line border area.
 11. The organiclight-emitting display panel according to claim 5, wherein the drivingdevice film layer comprises an organic insulation layer, and in thecathode connection area, the organic insulation layer: overlaps thepixel definition layer in the specially-shaped border area, and does notoverlap the straight-line border area.
 12. The organic light-emittingdisplay panel according to claim 11, wherein in a direction facing awayfrom the anode layer, the driving device film layer comprisessequentially a planarization layer, a source and drain metal layer, theorganic insulation layer, a gate metal layer, a gate insulation layer,and a semiconductor layer.
 13. The organic light-emitting display panelaccording to claim 1, wherein the organic light-emitting display panelhas a shape of a rounded rectangle having a straight-line edge and anarc edge, a part of the border area adjacent to the arc edge is thespecially-shaped border area, and a part of the border area adjacent tothe straight-line edge is the straight-line border area.
 14. The organiclight-emitting display panel according to claim 1, wherein the organiclight-emitting display panel has a straight-line edge and a holerecessed from the straight-line edge towards a center of the organiclight-emitting display panel, a part of the border area adjacent to thehole is the specially-shaped border area, and a part of the border areaadjacent to the straight-line edge is the straight-line border area.